For more than 100 years Thun has been producing and distributing components for bicycles. The family business particularly focuses on transmission parts such as bb-sets and sensor technology for e-bikes. With highly efficient processing, Thun produces more than 50,000 units per day. Thun is distributed worldwide and has become one of the world's market leaders due to its superior technology.

These universal bottom brackets are designed to fit most makes including Brompton. Suitable for a range of cycling disciplines like City, Trekking or Mountain biking.

A carbon composite is implemented into these, meaning no grease is needed to attach to your frame, and will work exactly how you want it to. Perfect for frames with damaged threads, these bottom brackets attach with ease.

Thun recommends NOT greasing the bottom bracket as this could swell the plastic and cause issues.

Technical Attributes

Material: Cold forged and Zinc coated steel spindle

Carbon composite: Sleeves and cups

Sealed bearings

Cups compatible with PEDRO's key

Square tapered

Spindle length: TH004 - 120mm

Weight: 265g